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1.
Noun
Using of one's own real life personality instead of role playing one. This results in almost zero role playing and a very unhealthily high emotional attachment to the player character - with the character behaving just as the player would and with the player reacting emotionally to everything that happens to the character. Causing grief to the other players and DM.
Mastroleplaytion is the scurge of every roleplaying game.
by Thanatos the Loonie January 28, 2005